Federation vessels used as private colony transports. They are about four times larger than the
Danube-class.

The Erewhon has been spelled as Erewon in the Star Trek Encyclopedia. The registry BDR-529 is the license
plate number in the movie "Blues Brothers." The Erewhon itself is also another joke, switch the 'w' and 'h',
then spell it backwards.

Ships of class:

SS Erewon BDR-
Class prototype.

SS Santa Maria BDR-529
Crash landed on planet in Orelious Minor system while on a mission to Gemulon V in 2360.Named for Christopher Columbus's ship.
"Paradise" - DS9.